Forcing-machine



(No Model.) K

R. H. BEACH.

PoRGlNG MACHINE.

No. 298,055. K Patented May 6,1884.

V l @hp/fg# N. PUERS r'holulhnmpher, wnshinglen. D. C.

UNITED STATES ,PATENT trice.

RALPH H. BEACH, OFHFLINT, MICHIGAN.

FoR'GlNG-MA'CHINE.

SPECIFICATION forming part of Letters Patent No. 298,055, dated May 6,1884.

To all whom it may concern.:

Be it known that I, RALPH H. BEACH, of Flint, in tue county of Geneseeand State of Michigan, have invented new and useful Improvements inForging-Machines; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relatesto an improvement in forging-machines such as areused for forging a variety of small articles, and wherein a heated pieceof iron is first pressed between registering dies secured to a plungingmandrel and stakes, and then trimmed oifby a similar operation betweenanother die and a' punch; and the improvement consists in theconstruction, arrangement, and combination of the different parts, allas more fully hereinafter described.

In the accompanying drawings, Figure l is a perspective viewv of myimproved machine. Fig. 2 is a horizontal section thereof on line x. Fig.3 is a vertical central section of the same. Fig. 4 is a cross-sectionof the plunging mandrel. Fig. 5 is ahorizontal section on line z z inFig. 3.

A is the main frame.-

B is a standard. l

v Gis ashaft journaled at one endin the frame A, and near the other endin the standard B. It is provided with the live-pulley E, loose pulleyF, fly-wheel G, andpinion H.

I is another shaft journaled vertically above the shaft C,and in thesame manner. It bears a gear-wheel, J, and pinion K, connected togetherand sleeved upon the shaft I.

L is a clutch operated by a lever, M.

N is another shaft j ournaled vertically above the shafts() and I. It isjournaled at three places in bearings a b c. rIhe bearing a is formed atthe upper end of the standard B. The bearing b is formed in the upperpartV of the standard A, which forms an integral part ofthe frame A, andthe bearing c is formed at the upper end of the end plate, O, whichlatter forms-a detachable and adjustable part of the frame A A. Thebearing a is of the usual description, but 'the bearings b and c areinverted bearings-that is, their caps are 5o at the under side oftheshaft N.

I4 is a large gear-wheel keyed upon the shaft Application filed July 14,1883. (No model.)

N and intermeshing with the pinion K. The

shaft N has formed upon it, between the bearings b and c, the crank e,which is journaled in a box-bearing, d.

R is the plunging mandrel.V It is of a rectangular form with verticalsides, and is provided through its body with a lateral opening The upperextension, A', of the frame is prof vided with verticalv flanges k lo,and the end plate, O, is provided with corresponding iianges, ZZ.

Q Q are guide-plates horizontally grooved upon their outer faces andheldin verticalposition upon opposite sides ofthe mandrel-plunger bybolts o o, which pass through said grooves and adjustably connect theend plate, O, with the frame A. Set-screws m m, passing through theflanges 7c Z, bear against the guide-platesQ Q, and allow of theadjustment ofthe latterfromor to the sides of the plunging mandrel. rIheend plate, O, is provided upon its lower end with an offset or iiange,p, which engages with a shoulder, q, upon the frame A, firmly securingit thereby against any upward thrust.

r are bolts securing the plate O near its lower end to the frame A,without, however, interfering. with a limited adjustability of saidplate from or to the side of the plunger-mandrel by means of the boltso.

S is a bed-block firmly seated upon or within the frame A, in anyconvenient manner.

t are anges projecting upwardly from the frame A, and embracing thebed-block upon j two opposite sides.

u are set-screws bearing against the bedone side of roc drawings) aresecured in the usual manner to the die-stocks, which have undercutmortises for this purpose.

The operation of the machine will be easily understood from theforegoing dercription. As the required action of the mandrel is obtainedby its engagement upon the eccentric port-ion c of the shaft, whichlifts it up and forces it down when in operation, it will be seen thatthe upward thrust exerted in ibrgin g is resisted by two bearings, b andc, which, owing to their inverted construction and connection with theframe, can do so to more advantage than in similar machines which havebut one bearing to resist the thrust.

As perfect adjustability of all the parts, without sacrifice ofstrength, is a great desideratum in machines of these kinds, it will beseen that the peculiar construction and arrangement of the end plate, O,forms an important factor in the construction of my machine. Anotheradvantage I get bythe con struction of my machine is that by doing awaywith the blow of the plunger or hammer with which forging-machines ofthat kind act, and substituting pressure therefor, I am enabled to usedies mam of chilled iron, which are much cheaper than these heretoforeused, which are of cast-steel, so as to withstand a heavy blow from thehammer. Another advantage is that I am thereby enabled to combine in mymachine both the forging-dies and trimming-dies, obviating thereby muchunnecessary handling. For forging, the dies approach about one-sixteenthof an inch, and this distance can be easily changed within small limits,ifdesircd, by using shims to raise or lower the box in the plungingmandrel.

I deem the peculiar construction ofthe shaft N, running the whole lengthof the machine, and haring a crank, c, formed thereon, as an importantfeature of my invention, as it allows of a mandrel of great width beingused, and yet admits of the support of the crank e at both ends. Thisdouble support for the crank c admits of the crank being made of greatlength, affording a large bearing-surface, so that there is no danger ofthe lubricant being squeezed out, as is the case sometimes under theenormous pressure exerted in these machines when the bcaringsurface issmall, as in those machines where the crank is necessarily short, owingto its notha-ving asupport at each end.

I am aware that punching-machines have been provided with an eccentricof larger size than the shaft, and supported by two bearings, and makeno claim to this construction, as this necessitates a much more bulkyarrangement, because the eccentric cannot pass through the man drcl. Y

That I claim as my invention isl. In Merging-machine, and in combinationwith the plunging mandrel and main frame thereof, a detachable end plateforming an end bearing for the main shaft, and provided with au offsetupon its lower end engaging upon an offset on the main frame,substantially as and for the purposes described.

l 2. In a forging-machine, the combination of the plunging mandrel R,frame A, and end plate. 0, with the guide-plates Q, bolts o, andset-screws m, constructed and arranged substantially as and for thepurposes described.

RALPH H. BEACH. IVitneSses;

H. S. SPRAGUn, C. J. HUNT.

